Lower Intake Manifold

Courtesy of CHRYSLER GROUP, LLC

The lower intake manifold is an injection molded nylon composite design:

• The lower intake manifold is sealed to the cylinder heads using six individual press-in-place port silicone gaskets
• Replace the gaskets whenever the lower intake manifold is removed from the engine
• The seven upper intake manifold fasteners thread directly into the composite lower intake manifold and are a self-taping design
• The fuel injection fuel rail is also a composite design
• The four fuel rail fasteners thread directly into the composite lower intake manifold and are a self-taping design
• The lower intake manifold can be serviced without removing the fuel injector rail
• The fuel rail and fuel injectors must be installed into the lower intake manifold as an assembly
• Do not attempt to install the fuel rail when the injectors are in the manifold
• Always install new O-rings on the fuel injectors
• If the lower intake manifold is damaged or cracked, it must be replaced